This CL also adds @SuppressWarning("unused" to java-overridable package.

Bug: 18003991
Change-Id: If70527e30654384705d7a814f5efd181d9f539e1

Finally it is turned out to be a XXL-size Lollipop.

Change-Id: Icbd22506be9de514eba287cdd8d97fbfd070ac09

This CL fixes the following compiler warnings.

- Indirect access to static member
- Access to a non-accessible member of an enclosing type
- Parameter assignment
- Method can be static
- Local variable declaration hides another field or variable
- Value of local variable is not used
- Unused import
- Unused private member
- Unnecessary 'else' statement
- Unnecessary declaration of throw exception
- Redundant type arguments
- Missing '@Override' annotation
- Unused '@SuppressWarning' annotations

Bug: 18003991
Change-Id: Icfebe753e53a2cc621848f769d6a3d7ce501ebc7

With this CL, we will use CursorAnchorInfoCompatWrapper just to
avoid unexpected NoClassDefFoundError due to the direct
dependency CursorAnchorInfo class, which is available only on
API level 21 and later.

Change-Id: I254ff83f1ca41daa21d0666b5824af22ba529022

The case that was not coverted well is that
CursorAnchorInfoCompatWrapper could be instantiated
with null object. In such situations, we should
do nothing.

BUG: 17682582
Change-Id: I6625a2f0ed8c5580ed9edfe4728f342da77a8e40

With this CL, the previously used commit indicator was reverted.
Instead we use the add-to-dictionary indicator only at the moment.

This CL also fixes the indicator position in bidi context.

BUG: 17335734
Change-Id: I5f7cf173ddc30876e2b01320acaff8ba4265edf6

This is a follow up CL for Ic8c6fab58c01206872a34e7ee604cdda.

No behavior change is intended in this CL.

BUG: 17365414
BUG: 17335734
Change-Id: I4299536d0cb0c660b7b564653c72c9cb409a7aa5

This is just a follow up CL for Ia8cbb9f6b41cd9509fc0147fd68763df.
No behavial change is intended.

BUG: 17200900
Change-Id: Iba23b731ebde64ec2e816c5b4bef1d93632fce1e

This CL add more compatibility wrapper methods for
CursorAnchorInfo.

This CL also adds more utility functions and types into
CompatUtils to reduce explict cast operations.

Change-Id: Id50165b552bbf28b832a6da13bf06eedcd2a190e

Change-Id: Ia26c783ebefd7b928d623a598792b7ba32d89a80