Fix intergation test for lofi.py and lite_page.py

testLoFi, testLoFiCacheBypass, testLoFiSlowConnection are failing on desktop
because DataReductionProxyDecidesTransform is not on.

Same issue for testLitePageBTF, testLitePageBTFNano,
testLitePageForcedExperiment, and testPreviewProvidedForHeavyPage.

testLitePageBTFNano should be marked with AndroidOnly.

Bug: 794344
Change-Id: Ia9e6708bfa2e9e3f233b5ac9989089e71dfc829e
Reviewed-on: https://chromium-review.googlesource.com/822759
Commit-Queue: Thanh Le <thanhdle@chromium.org>
Reviewed-by: Doug Arnett <dougarnett@chromium.org>
Reviewed-by: Ryan Sturm <ryansturm@chromium.org>
Cr-Commit-Position: refs/heads/master@{#523643}

tools/chrome_proxy/webdriver/lite_page.py

@@ -6,6 +6,7 @@ import common
 from common import ParseFlags
 from common import TestDriver
 from common import IntegrationTest
+from decorators import AndroidOnly
 from decorators import ChromeVersionBeforeM
 from decorators import ChromeVersionEqualOrAfterM
 
@@ -75,6 +76,8 @@ class LitePage(IntegrationTest):
       self.skipTest('This test cannot be run with other experiments.')
     with TestDriver() as test_driver:
       test_driver.AddChromeArg('--enable-spdy-proxy-auth')
+      test_driver.AddChromeArg('--enable-features='
+                               'DataReductionProxyDecidesTransform')
       test_driver.AddChromeArg('--data-reduction-proxy-lo-fi=always-on')
       test_driver.AddChromeArg('--enable-data-reduction-proxy-lite-page')
 
@@ -138,7 +141,9 @@ class LitePage(IntegrationTest):
       self.assertEqual(1, non_lite_page_responses)
 
   # Checks that a Lite Page does not have an error when scrolling to the bottom
-  # of the page and is able to load all resources.
+  # of the page and is able to load all resources. This test is only run on
+  # Android because it depends on window size of the browser.
+  @AndroidOnly
   def testLitePageBTF(self):
     # If it was attempted to run with another experiment, skip this test.
     if common.ParseFlags().browser_args and ('--data-reduction-proxy-experiment'
@@ -185,7 +190,9 @@ class LitePage(IntegrationTest):
         self.assertIn(response.status, [200, 204])
 
   # Checks that a Nano Lite Page does not have an error when scrolling to the
-  # bottom of the page and is able to load all resources.
+  # bottom of the page and is able to load all resources. This test is only run
+  # on Android because it depends on window size of the browser.
+  @AndroidOnly
   @ChromeVersionEqualOrAfterM(65)
   def testLitePageBTFNano(self):
     # If it was attempted to run with another experiment, skip this test.
@@ -397,6 +404,8 @@ class LitePage(IntegrationTest):
   def testPreviewProvidedForHeavyPage(self):
     with TestDriver() as test_driver:
       test_driver.AddChromeArg('--enable-spdy-proxy-auth')
+      test_driver.AddChromeArg('--enable-features='
+                               'DataReductionProxyDecidesTransform')
       test_driver.AddChromeArg(
           '--force-fieldtrial-params=NetworkQualityEstimator.Enabled:'
           'force_effective_connection_type/3G,'

tools/chrome_proxy/webdriver/lofi.py

@@ -16,6 +16,8 @@ class LoFi(IntegrationTest):
   def testLoFi(self):
     with TestDriver() as test_driver:
       test_driver.AddChromeArg('--enable-spdy-proxy-auth')
+      test_driver.AddChromeArg('--enable-features='
+                               'DataReductionProxyDecidesTransform')
       test_driver.AddChromeArg('--data-reduction-proxy-lo-fi=always-on')
       # Disable server experiments such as tamper detection.
       test_driver.AddChromeArg('--data-reduction-proxy-server-experiments-'
@@ -40,12 +42,13 @@ class LoFi(IntegrationTest):
   def testLoFiSlowConnection(self):
     with TestDriver() as test_driver:
       test_driver.AddChromeArg('--enable-spdy-proxy-auth')
+      test_driver.AddChromeArg('--enable-features='
+                               'DataReductionProxyDecidesTransform')
       test_driver.AddChromeArg('--data-reduction-proxy-lo-fi=slow-connections-'
                                'only')
       # Disable server experiments such as tamper detection.
       test_driver.AddChromeArg('--data-reduction-proxy-server-experiments-'
                                'disabled')
-
       test_driver.AddChromeArg('--force-fieldtrial-params='
                                'NetworkQualityEstimator.Enabled:'
                                'force_effective_connection_type/Slow2G')
@@ -126,6 +129,8 @@ class LoFi(IntegrationTest):
       # --profile-type=default command line for the same user profile and cache
       # to be used across the two page loads.
       test_driver.AddChromeArg('--enable-spdy-proxy-auth')
+      test_driver.AddChromeArg('--enable-features='
+                               'DataReductionProxyDecidesTransform')
       test_driver.AddChromeArg('--data-reduction-proxy-lo-fi=always-on')
       test_driver.AddChromeArg('--profile-type=default')
       test_driver.AddChromeArg('--data-reduction-proxy-server-experiments-'
@@ -193,9 +198,9 @@ class LoFi(IntegrationTest):
       self.skipTest('This test cannot be run with other experiments.')
     with TestDriver() as test_driver:
       test_driver.AddChromeArg('--enable-spdy-proxy-auth')
-      test_driver.AddChromeArg('--data-reduction-proxy-lo-fi=always-on')
       test_driver.AddChromeArg('--enable-features='
                                'DataReductionProxyDecidesTransform')
+      test_driver.AddChromeArg('--data-reduction-proxy-lo-fi=always-on')
 
       # Ensure fast network (4G) to ensure force flag ignores ECT.
       test_driver.AddChromeArg('--force-fieldtrial-params='