Change desktop and ES 3.0 to always use sized internal texture formats.

src/gpu/gl/GrGLCaps.cpp

Index: src/gpu/gl/GrGLCaps.cpp
diff --git a/src/gpu/gl/GrGLCaps.cpp b/src/gpu/gl/GrGLCaps.cpp
index 8b26282968ba8bb4ea91371ee05c6b464d3dca2b..7c00638fa798c6ec7e091c57e87ecb185a6d6c73 100644
--- a/src/gpu/gl/GrGLCaps.cpp
+++ b/src/gpu/gl/GrGLCaps.cpp
@@ -44,6 +44,7 @@ void GrGLCaps::reset() {
     fTwoFormatLimit = false;
     fFragCoordsConventionSupport = false;
     fVertexArrayObjectSupport = false;
+    fES2CompatibilitySupport = false;
     fUseNonVBOVertexAndIndexDynamicData = false;
     fIsCoreProfile = false;
     fFullClearIsFree = false;
@@ -86,6 +87,7 @@ GrGLCaps& GrGLCaps::operator= (const GrGLCaps& caps) {
     fTwoFormatLimit = caps.fTwoFormatLimit;
     fFragCoordsConventionSupport = caps.fFragCoordsConventionSupport;
     fVertexArrayObjectSupport = caps.fVertexArrayObjectSupport;
+    fES2CompatibilitySupport = caps.fES2CompatibilitySupport;
     fUseNonVBOVertexAndIndexDynamicData = caps.fUseNonVBOVertexAndIndexDynamicData;
     fIsCoreProfile = caps.fIsCoreProfile;
     fFullClearIsFree = caps.fFullClearIsFree;
@@ -239,6 +241,13 @@ bool GrGLCaps::init(const GrGLContextInfo& ctxInfo, const GrGLInterface* gli) {
                                     ctxInfo.hasExtension("GL_OES_vertex_array_object");
     }
 
+    if (kGL_GrGLStandard == standard) {
+        fES2CompatibilitySupport = ctxInfo.hasExtension("GL_ARB_ES2_compatibility");
+    }
+    else {
+        fES2CompatibilitySupport = true;
+    }
+
     if (kGLES_GrGLStandard == standard) {
         if (ctxInfo.hasExtension("GL_EXT_shader_framebuffer_fetch")) {
             fFBFetchSupport = true;
@@ -511,7 +520,8 @@ void GrGLCaps::initConfigTexturableTable(const GrGLContextInfo& ctxInfo, const G
 
     // Base texture support
     fConfigTextureSupport[kAlpha_8_GrPixelConfig] = true;
-    fConfigTextureSupport[kRGB_565_GrPixelConfig] = true;
+    fConfigTextureSupport[kRGB_565_GrPixelConfig] = (kGL_GrGLStandard != standard ||
+                                                     fES2CompatibilitySupport);
     fConfigTextureSupport[kRGBA_4444_GrPixelConfig] = true;
     fConfigTextureSupport[kRGBA_8888_GrPixelConfig] = true;