Remove external matrix feature.

We haven't been testing this for nearly two years.

R=reed@google.com
Review URL: https://codereview.appspot.com/6640044

git-svn-id: http://skia.googlecode.com/svn/trunk@5857 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/gpu/SkGpuDevice.cpp b/src/gpu/SkGpuDevice.cpp
index 8841676..9a495c9 100644
--- a/src/gpu/SkGpuDevice.cpp
+++ b/src/gpu/SkGpuDevice.cpp
@@ -1857,7 +1857,7 @@
                                    &grPaint)) {
             return;
         }
-        GrTextContext context(fContext, grPaint, draw.fExtMatrix);
+        GrTextContext context(fContext, grPaint);
         myDraw.fProcs = this->initDrawForText(&context);
         this->INHERITED::drawText(myDraw, text, byteLength, x, y, paint);
     }
@@ -1885,7 +1885,7 @@
                                    &grPaint)) {
             return;
         }
-        GrTextContext context(fContext, grPaint, draw.fExtMatrix);
+        GrTextContext context(fContext, grPaint);
         myDraw.fProcs = this->initDrawForText(&context);
         this->INHERITED::drawPosText(myDraw, text, byteLength, pos, constY,
                                      scalarsPerPos, paint);