Upgrading to bazel 0.26.

bazel/grpc_deps.bzl

@@ -178,9 +178,9 @@ def grpc_deps():
     if "com_google_absl" not in native.existing_rules():
         http_archive(
             name = "com_google_absl",
-            sha256 = "5fe2a3a8f8378e81d4d3db6541f48030e04233ccd2d6c7e9d981ed577b314ae8",
-            strip_prefix = "abseil-cpp-308ce31528a7edfa39f5f6d36142278a0ae1bf45",
-            url = "https://github.com/abseil/abseil-cpp/archive/308ce31528a7edfa39f5f6d36142278a0ae1bf45.tar.gz",
+            sha256 = "7ddf863ddced6fa5bf7304103f9c7aa619c20a2fcf84475512c8d3834b9d14fa",
+            strip_prefix = "abseil-cpp-61c9bf3e3e1c28a4aa6d7f1be4b37fd473bb5529",
+            url = "https://github.com/abseil/abseil-cpp/archive/61c9bf3e3e1c28a4aa6d7f1be4b37fd473bb5529.tar.gz",
         )
 
     if "bazel_toolchains" not in native.existing_rules():
@@ -205,9 +205,9 @@ def grpc_deps():
     if "io_opencensus_cpp" not in native.existing_rules():
         http_archive(
             name = "io_opencensus_cpp",
-            sha256 = "3436ca23dc1b3345186defd0f46d64244079ba3d3234a0c5d6ef5e8d5d06c8b5",
-            strip_prefix = "opencensus-cpp-9b1e354e89bf3d92aedc00af45b418ce870f3d77",
-            url = "https://github.com/census-instrumentation/opencensus-cpp/archive/9b1e354e89bf3d92aedc00af45b418ce870f3d77.tar.gz",
+            sha256 = "90d6fafa8b1a2ea613bf662731d3086e1c2ed286f458a95c81744df2dbae41b1",
+            strip_prefix = "opencensus-cpp-c9a4da319bc669a772928ffc55af4a61be1a1176",
+            url = "https://github.com/census-instrumentation/opencensus-cpp/archive/c9a4da319bc669a772928ffc55af4a61be1a1176.tar.gz",
         )
     if "upb" not in native.existing_rules():
         http_archive(

tools/bazel.sh

@@ -22,7 +22,7 @@
 
 set -e
 
-VERSION=0.24.1
+VERSION=0.26.0
 
 CWD=`pwd`
 BASEURL=https://github.com/bazelbuild/bazel/releases/download/