Adding functionality for purgin graphics resource handles
This will allow a fix to WebKit for preventing a crash when the graphics
context is destroyed before the GrContext

BUG=http://code.google.com/p/chromium/issues/detail?id=85309



git-svn-id: http://skia.googlecode.com/svn/trunk@1551 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/gpu/src/GrGpuGLShaders.cpp b/gpu/src/GrGpuGLShaders.cpp
index 50be67f..0a933b5 100644
--- a/gpu/src/GrGpuGLShaders.cpp
+++ b/gpu/src/GrGpuGLShaders.cpp
@@ -130,6 +130,11 @@
     }
 };
 
+void GrGpuGLShaders::abandonResources(){
+    INHERITED::abandonResources();
+    fProgramCache->abandon();
+}
+
 void GrGpuGLShaders::DeleteProgram(GrGLProgram::CachedData* programData) {
     GR_GL(DeleteShader(programData->fVShaderID));
     GR_GL(DeleteShader(programData->fFShaderID));