Telemetry: Fix exact_matches in telemetry.test_runner.

Previously, if exact_matches was True but there were no exact matches,
it would return fuzzy matches instead. This is not what the caller asked
for.

GPU test names are changed to match the buildbot config, since they were
previously relying on fuzzy matching.

SHERIFFS: May cause errors like:

  No test named "some_test_name".

  Available tests are:
    ...

If so, this CL can be safely reverted.

BUG=413334,413442

Committed: https://crrev.com/566ed9f6e71cea313c88e8f259eca76581b72d67
Cr-Commit-Position: refs/heads/master@{#294757}

Review URL: https://codereview.chromium.org/560153004

Cr-Commit-Position: refs/heads/master@{#295888}

content/test/gpu/gpu_tests/gpu_process.py

@@ -36,13 +36,12 @@ class _GpuProcessValidator(page_test.PageTest):
 class GpuProcess(benchmark.Benchmark):
   """Tests that accelerated content triggers the creation of a GPU process"""
   test = _GpuProcessValidator
-  page_set = page_sets.GpuProcessTestsPageSet
 
   def CreateExpectations(self, page_set):
     return expectations.GpuProcessExpectations()
 
   def CreatePageSet(self, options):
-    page_set = super(GpuProcess, self).CreatePageSet(options)
+    page_set = page_sets.GpuProcessTestsPageSet()
     for page in page_set.pages:
       page.script_to_evaluate_on_commit = test_harness_script
     return page_set

content/test/gpu/gpu_tests/gpu_rasterization.py

@@ -65,10 +65,9 @@ class _GpuRasterizationValidator(cloud_storage_test_base.ValidatorBase):
 class GpuRasterization(cloud_storage_test_base.TestBase):
   """Tests that GPU rasterization produces valid content"""
   test = _GpuRasterizationValidator
-  page_set = page_sets.GpuRasterizationTestsPageSet
 
   def CreatePageSet(self, options):
-    page_set = super(GpuRasterization, self).CreatePageSet(options)
+    page_set = page_sets.GpuRasterizationTestsPageSet()
     for page in page_set.pages:
       page.script_to_evaluate_on_commit = test_harness_script
     return page_set

content/test/gpu/gpu_tests/memory.py → content/test/gpu/gpu_tests/memory_test.py

 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
-import memory_expectations
+import memory_test_expectations
 import page_sets
 
 from telemetry import benchmark
@@ -99,16 +99,15 @@ class _MemoryValidator(page_test.PageTest):
     return 'Memory allocation too %s (was %d MB, should be %d MB +/- %d MB)' % (
       low_or_high, mb_used, SINGLE_TAB_LIMIT_MB, WIGGLE_ROOM_MB)
 
-class Memory(benchmark.Benchmark):
+class MemoryTest(benchmark.Benchmark):
   """Tests GPU memory limits"""
   test = _MemoryValidator
-  page_set = page_sets.MemoryTestsPageSet
 
   def CreateExpectations(self, page_set):
-    return memory_expectations.MemoryExpectations()
+    return memory_test_expectations.MemoryTestExpectations()
 
   def CreatePageSet(self, options):
-    page_set = super(Memory, self).CreatePageSet(options)
+    page_set = page_sets.MemoryTestsPageSet()
     for page in page_set.pages:
       page.script_to_evaluate_on_commit = test_harness_script
     return page_set

content/test/gpu/gpu_tests/memory_expectations.py → content/test/gpu/gpu_tests/memory_test_expectations.py

@@ -18,7 +18,7 @@ from telemetry.page import test_expectations
 # Examples: ('nvidia', 0x1234), ('arm', 'Mali-T604')
 # Device IDs must be paired with a GPU vendor.
 
-class MemoryExpectations(test_expectations.TestExpectations):
+class MemoryTestExpectations(test_expectations.TestExpectations):
   def SetExpectations(self):
     # Sample Usage:
     # self.Fail('Memory.CSS3D',

content/test/gpu/gpu_tests/pixel.py

@@ -148,7 +148,6 @@ class _PixelValidator(cloud_storage_test_base.ValidatorBase):
 
 class Pixel(cloud_storage_test_base.TestBase):
   test = _PixelValidator
-  page_set = page_sets.PixelTestsPageSet
 
   @classmethod
   def AddTestCommandLineArgs(cls, group):
@@ -159,7 +158,7 @@ class Pixel(cloud_storage_test_base.TestBase):
         default=default_reference_image_dir)
 
   def CreatePageSet(self, options):
-    page_set = super(Pixel, self).CreatePageSet(options)
+    page_set = page_sets.PixelTestsPageSet()
     for page in page_set.pages:
       page.script_to_evaluate_on_commit = test_harness_script
     return page_set

tools/telemetry/telemetry/test_runner.py

@@ -246,6 +246,7 @@ def _MatchTestName(input_test_name, exact_matches=True):
     for test_class in _Tests():
       if exact_match == test_class.Name():
         return [test_class]
+    return []
 
   # Fuzzy matching.
   return [test_class for test_class in _Tests()