Fix for dashing shader on Mali: use highp where necessary.

src/gpu/effects/GrDashingEffect.cpp

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrDashingEffect.h"
 
 #include "GrBatch.h"
@@ skipping 1061 matching lines @@
     const DashingLineEffect& de = args.fGP.cast<DashingLineEffect>();
     GrGLGPBuilder* pb = args.fPB;
 
     GrGLVertexBuilder* vsBuilder = args.fPB->getVertexShaderBuilder();
 
     // emit attributes
     vsBuilder->emitAttributes(de);
 
     // XY refers to dashPos, Z is the dash interval length
     GrGLVertToFrag inDashParams(kVec3f_GrSLType);
-    args.fPB->addVarying("DashParams", &inDashParams);
+    args.fPB->addVarying("DashParams", &inDashParams, GrSLPrecision::kHigh_GrSLPrecision);
     vsBuilder->codeAppendf("%s = %s;", inDashParams.vsOut(), de.inDashParams()->fName);
 
     // The rect uniform's xyzw refer to (left + 0.5, top + 0.5, right - 0.5, bottom - 0.5),
     // respectively.
     GrGLVertToFrag inRectParams(kVec4f_GrSLType);
-    args.fPB->addVarying("RectParams", &inRectParams);
+    args.fPB->addVarying("RectParams", &inRectParams, GrSLPrecision::kHigh_GrSLPrecision);
     vsBuilder->codeAppendf("%s = %s;", inRectParams.vsOut(), de.inRectParams()->fName);
 
     // Setup pass through color
     if (!de.colorIgnored()) {
         this->setupUniformColor(pb, args.fOutputColor, &fColorUniform);
     }
 
 
     // Setup position
     this->setupPosition(pb, gpArgs, de.inPosition()->fName);
@@ skipping 198 matching lines @@
     info.fIntervals = intervals;
     info.fCount = 2;
     info.fPhase = phase;
     SkDEBUGCODE(bool success = ) strokeInfo.setDashInfo(info);
     SkASSERT(success);
 
     return create_batch(color, viewMatrix, pts, useAA, strokeInfo, msaaRT);
 }
 
 #endif